doc: fix typo in comment explaining rb_tree usage
doc: fix typo in comment explaining rb_tree usage

Fix typo in comment explaining rb_tree usage.
s/int/in

Signed-off-by: Nikanth Karthikesan <e876309828e3f41803de99641e5858aebdf88b24@suse.de>
Signed-off-by: Jiri Kosina <ed58f755cc8caaf10c3e8c731a8b86fb8f13d6cb@suse.cz>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas